Polk and Post

Supervisor Danny Sauter District 3 San Francisco, CA Dear Supervisor Sauter, I am writing to you regarding the urgent safety concerns at the intersection of Polk and Post Streets. This location shows more reported harm than 99 percent of San Francisco intersections, earning a grade F on the Danger Index. (No exposure normalization: the index ranks reported harm, not risk per crossing.) City records document 70 injury collisions within 150 meters of this intersection in the last five years. For context, the Danger Index grade is computed over a tighter 80-meter core, so these figures are measured over different areas. Furthermore, there have been 292 street-condition 311 reports concerning street defects, sidewalks, curbs, signs, streetlights, and blocked sidewalks at this location in the last three years. While recent searches found no press coverage for this corner, reports of safety problems here go back at least 12 years, to 2014, representing the earliest coverage we can find. An automated visual audit flagged a vehicle turning conflict zone in the Street View photograph, which city records corroborate with 3 pedestrian crossing collisions in 5 years. City records also show 10 street-condition 311 reports in 12 months and 3 pedestrian crossing collisions in 5 years related to faded or sub-standard crosswalk markings, though the visual audit did not find this in the photograph. Similarly, city records show 5 street-condition 311 reports in 12 months regarding poor curb or sidewalk condition, which the visual audit did not observe. I urge you to advocate for funding Continental crosswalks, corner daylighting, and a leading pedestrian interval at this intersection. An estimated $250,000 to $350,000, order of magnitude, could be secured through the Caltrans Highway Safety Improvement Program (HSIP). Thank you for your attention to this critical matter. Sincerely, A resident of District 3